The Faceless Angel stamp, pictured left of the correct version. (SWNS/JC Auctions) A Christmas stamp over 50 years old could be sold for over £500 thanks to an unusual printing mishap. The three pence ...

Stamp collecting feels like something your grandpa would wax poetic about, but it's cooler than you think. While the odds that you'll come across one of these record-breakingly rare and valuable ...

51,000 were printed, and fewer than 150 are still around. The stamp is worth an estimated $547,464 adjusted for inflation ...